<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title>响应式网页布局</title>
		<meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
		<link rel="stylesheet" href="index.css" />
	</head>
	<body>
		<div class="container">
			<div class="col">响应式左侧</div>
			<div class="col">响应式中间</div>
			<div class="col">响应式右侧</div>
		</div>
	</body>
</html>
